Gets the metadata for api on buffer.
When there is no such metadata, null is returned. If multiple metadata with the given api
are attached to this buffer only the first one is returned. To handle multiple metadata with a given API use
gst_buffer_iterate_meta or foreach_meta instead and check the `meta-
>info.api` member for the API type.
| this |
a Buffer |
| api |
the Type of an API |
|
the metadata for |